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Rex is Latin for "king", see Rex (king). Specifically, it was the title of the kings of ancient Rome.

The term may also refer to:



  • Rex, Georgia, an unincorporated community in Clayton County, United States
  • Rex, North Carolina, a census-designated place in Robeson County, United States
  • Rex River, a river in the U.S. state of Washington
  • Mount Rex, an isolated mountain in Antarctica

Literature and performing arts[edit]

  • Oedipus Rex, a Greek tragedy by Sophocles, also known as Oedipus Tyrannus or Oedipus the King
  • Oedipus rex (opera), an opera by Igor Stravinsky
  • Rex (musical), a stage musical, with music by Richard Rodgers and lyrics by Sheldon Harnick








  • A species of flatfish named the Rex sole (Glyptocephalus zachirus)







  • SS Rex, an Italian luxury ship, sunk by Allied bombers off the coast of Slovenia in 1944


Energy and fuels[edit]


Computing and technology[edit]

  • The REX prefix used by the x86-64 instruction encoding
  • REXX (originally named Rex), a computer programming language
  • .rex (disambiguation) file extensions used by REXX and REX2
  • REX 5000, a series of personal digital assistants
  • REX 6000, a series of personal digital assistants
  • Rex (software), a remote execution, configuration management and software deployment system
  • Rex (video game), a 1988 game for the ZX Spectrum and Amstrad CPC
  • REX, an audio file format; see REX2
  • REX OS, a real-time operating system developed by Qualcomm
  • Samsung REX, a series of affordable feature phones
  • REX, an abbreviation for "request to exit", a push-button or motion detector used for access control

Fictional characters[edit]


Animated television series[edit]

  • Rex Banner, a one-time character in The Simpsons appearing in the episode "Homer vs. the Eighteenth Amendment"
  • Rex Raptor, a recurring character in the 4kids version of Yu-Gi-Oh!
  • Rex Salazar, the main title character from the animated show Generator Rex
  • Rex, the title character in the claymation series Rex the Runt
  • Captain Rex, the clone trooper captain who served as General Anakin Skywalker's second-in-command in the series Star Wars: The Clone Wars

Live-action television series[edit]

  • Rex Balsom, a character on the soap opera One Life to Live
  • Rex Brady, a character on the soap opera Days of Our Lives
  • Rex Buckland, a character in the series Charmed
  • Inspector Rex, an Austrian police dog in the series of the same name
  • Rex (TV series), a Slovak television series based on the Austrian original
  • Rex (Primeval), a Coelurosauravus-like reptile in the series Primeval
  • Rex Van de Kamp, a character in the series Desperate Housewives
  • Rex Britten, a character in the series Awake
  • Rex Powers, a dummy in the series Victorious

Other fiction[edit]